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2 years ago

Two times the sum of a number and 5 is 20

Mathematics

2 answers:

Art [367]2 years ago

6 0

Answer:

Step-by-step explanation:

Zolol [24]2 years ago

4 0

Answer:

Let the required number be ' x '

According to the given problem

Equation :--- 2(x + 5) = 20

Now, by solving for x, we get

$2(x + 5) = 20 \\ (x + 5) = \frac{20}{2} \\ (x + 5) = 10 \\ x = 10 - 5 \\ \boxed{ x = 5}$

2(x + 5) = 20 is the required equation
x = 5 is the required value of x

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What is the range of possible sizes for side x? it is a triangle with one side having 4.0, and the other having 5.6. picture att

SIZIF [17.4K]

Given:

Given that the two sides of the triangle are x, 4.0 and 5.6

We need to determine the range of possible sizes for the side x.

Range of x:

The range of x can be determined using the triangle inequality theorem.

The triangle inequality theorem states that, "if any side of a triangle must be shorter than the other two sides added together".

Thus, applying the theorem, we have;

$x=4.0+5.6$

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Also, the the triangle inequality theorem states that, "the third side must be also larger than the difference between the other two sides".

Thus, we have;

$x=5.6-4.0$

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2 years ago

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lions [1.4K]

Answer:

$Leg\ 1 = 8$

$Leg\ 2 = 15$

Step-by-step explanation:

Given: See Attachment

Required

Determine the length of the legs

To do this, we apply Pythagoras theorem.

$Hyp^2 = Adj^2 + Opp^2$

In this case:

$17^2 = x^2 + (2x- 1)^2$

Open Bracket

$17^2 = x^2 + 4x^2- 2x-2x + 1$

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Solving using quadratic formula:

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$x = 8$

One of the leg is:

$Leg\ 1 = x$

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